US CMS Silicon Tracker : Schedule J. Incandela University of California Santa Barbara US CMS Silicon Tracker Project Manager Fermilab PMG April 9, 2004

UCSB CMS Silicon Tracker PMG April 9, 2004, J. Incandela - Schedule 2 Components “If they come, we will build it” We do not have direct control but in the past year we have exerted a major influence. Problems with components, many of which were found in the US, led to delays of varying lengths Module breakage in transport → 2 months Hybrid Cable problem → +3 months ST Sensor issues → +5 months ST sensors are the greatest concern

UCSB CMS Silicon Tracker PMG April 9, 2004, J. Incandela - Schedule 3 Current situation 7000 thick sensors have been ordered from HPK This was a major achievement in which the US was very active HPK must know by July if we want to increase this order in order to maintain CMS production without interruption. This will depend upon whether STM is qualified or not The agreement with ST Produce 1000 sensors with final processing by May CMS to determine if these sensors are acceptable according to a barrage of strict tests IV,CV with vacuum - Full strip test - Long term test for 72 hours - Proton irradiation of sensors and test structures Module construction OB1 and OB2 in the US Studied for sensor related defects, e.g. CMN, unstable current, irradiation of modules, etc. If acceptance rate <98% order shifts 100% HPK This plan was presented to STM on March 31 st

UCSB CMS Silicon Tracker PMG April 9, 2004, J. Incandela - Schedule 4 HPK & STM Dynamic Sharing HPK plans to reach 1500 sensors/month in July HPK plan below was established in January at production site in Japan

UCSB CMS Silicon Tracker PMG April 9, 2004, J. Incandela - Schedule 5 Front end hybrids As of 3/31/ good Hy accepted 581 assembled with PA I expect yield to stabilize at ≥ 90%

UCSB CMS Silicon Tracker PMG April 9, 2004, J. Incandela - Schedule 6 Rods Component issues here as well OptoHybrids Large quantities already shipped directly to CERN Frames 150 delivered CCU modules are the main issue now. Require 100/month Will be reached within 3 months Mounting/cabling at CERN Can reach production rate of 50 rods/month US could conceivably help here if necessary

UCSB CMS Silicon Tracker PMG April 9, 2004, J. Incandela - Schedule 7 A Battle Hardened Schedule

UCSB CMS Silicon Tracker PMG April 9, 2004, J. Incandela - Schedule 8 US Module Production (as determined by A. Cattai, J. Incandela, S. Schael) This is our current module production schedule: USA module final production TOB modules: Early June 2004 to May 2005 TEC modules: Late June 2004 to mid-April 2005 Paced by sensors Our colleagues appreciate that we must get all sensors for US production according to a schedule, with significant contingency, that allows us to complete all modules in FY05

UCSB CMS Silicon Tracker PMG April 9, 2004, J. Incandela - Schedule 9 Other Considerations Rods are expected to keep pace with module assembly Schedule for integration of rods on wheels has slipped US involvement in I&C was scheduled for second half of FY04. Now expect no significant US involvement before second half of FY04 Most system integration will likely occur in FY06 – our M&O start year Also, having developed extremely high production capacities, we have recently analyzed all systems for potential failures that would lead to downtime in production Ordered and stocked critical spares of fabrication tooling and equipment Cross-training fabrication personnel to maintain depth at each station Additional satellite processing capacity in Mexico Specialized testing and diagnostics capabilities at UC Riverside Particularly important to remove this work from the production lines where it could be a distraction, leading to disruptions

UCSB CMS Silicon Tracker PMG April 9, 2004, J. Incandela - Schedule 10 Conclusions A last round of problems surfaced in late FY03 early FY04 More delays have resulted A Major US push - intense, concentrated, exhausting - with similar contributions by many groups in the tracker collaboration got us over the final hurdles for modules Schedule is the first in which I have a high degree of confidence Based on component production rates that have been demonstrated by our vendors and module production rates that we have comfortably demonstrated We also have explicit fallback plans and contingency 5 months contingency remain for completion in FY05 We can survive ‘typical’ production problems A very serious problem could jeopardize our FY05 target